12 Gauge. 29.375" barrel length (with Compensator). SN: Y2007308. 2.75" chamber length. Modified choke. Blued metal finish overall with jeweled bolt mounting a full length vented barrel rib with twin bead sights, fancy walnut semi pistol grip stock with WINCHESTER recoil pad, and a LYMAN made Cutts compensated choke. Slide-action repeating tube magazine fed shotgun from the late Y prefix series of Model 12 production. Model markings on the barrel read WINCHESTER MODEL 12-12 GA. 2 3/4 CHAM./MADE IN NEW HAVEN, CONN. U.S.A. WINCHESTER PROOF STEEL. Winchester monogram proofs are offset to the left to make room for the vented rib. Shotgun mounts a combination compensator and choke with the tube marked MADE BY/LYMAN/MIDDLEFIELD/CONN. U.S.A. with the Cutts trademark and 12 MOD choke marking.